An oral stent for auxiliary positioning of oral tumor radiotherapy

Abstract

The present invention provides an oral bracket for auxiliary positioning of oral tumor radiotherapy, including a cylindrical support frame and a tongue depressor, wherein the tongue depressor is inserted into the support frame; the support frame includes an upper support plate and a lower support plate slidably connected in the height direction, and an adjusting screw for adjusting the height of the support frame is provided between the upper support plate and the lower support plate; an observation window is provided at one end of the tongue depressor, and a plurality of shielding strips are provided in the observation window, wherein the shielding strips include a fixed shielding strip fixedly connected to the side wall of the observation window, and a plurality of dynamic shielding strips slidably connected to the observation window, and a linkage mechanism is provided between two adjacent shielding strips, wherein the linkage mechanism drives the shielding strips to partially or completely cover the observation window. The oral bracket for auxiliary positioning of oral tumor radiotherapy of the present invention can conveniently adjust the height of the oral bracket and the width of the tongue depressor, and the individualized design of the occlusal part can be suitable for use by various patients.

Description

Technical Field

[0001] The invention relates to the field of medical devices, and in particular to an oral stent used for auxiliary positioning of oral tumor radiotherapy. Background Art

[0002] When doctors position oral tumors for radiotherapy, they cannot fix the normal organs in the oral cavity well, cannot ensure a good opening distance, and lack individuality, repeatability, stability and comfort, which affects the accuracy of radiotherapy, causes excessive radiation doses to normal tissues that do not need to be irradiated, and leads to a high incidence of acute and chronic related radiotherapy.

[0003] Existing oral stents have several defects: (1) The caliber cannot be adjusted according to the degree of opening of the patient's mouth, which affects the patient's comfort; (2) The teeth of each patient are different, so the repeatability of the stent's tooth occlusion is poor, which affects the stability of positioning; (3) Although the existing stent can prevent the patient's mouth from closing, the patient's mouth can still close, and it cannot play a good role in suppressing the tongue, the main active organ of the oral cavity. Moreover, the tongue depressor that comes with the existing oral stent is a flat structure that cannot cover the entire tongue width. For oral tumors such as hard palate cancer that require protection of the tongue, this will cause part of the tongue to be exposed to unnecessary radiation. For patients with tongue cancer who have had part of the tongue removed, the existing tongue depressor cannot completely suppress the remaining tongue, and the suppression effect is poor, resulting in insufficient radiation dose to the remaining tongue. At the same time, the tongue is an active organ. If it cannot be well suppressed and fixed during radiotherapy, the accuracy of the target area will be affected. Summary of the invention

[0004] In order to make up for the deficiencies in the prior art, the present invention provides an oral bracket for auxiliary positioning of oral tumor radiotherapy, which can conveniently adjust the height of the oral bracket and the width of the tongue depressor, and at the same time, the bite part is individually designed, which can be suitable for various patients.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] An oral bracket for auxiliary positioning of oral tumor radiotherapy, comprising a cylindrical support frame and a tongue depressor, wherein the tongue depressor is inserted into the support frame; the support frame comprises an upper support plate and a lower support plate slidably connected in the height direction, an adjusting screw for adjusting the height of the support frame is provided between the upper support plate and the lower support plate, an observation window is provided at one end of the tongue depressor, a plurality of shielding strips are provided in the observation window, the shielding strips comprise a fixed shielding strip fixedly connected to the side wall of the observation window, and a plurality of dynamic shielding strips slidably connected to the observation window, a linkage mechanism is provided between two adjacent shielding strips, and the linkage mechanism drives the shielding strip to partially or completely cover the observation window.

[0007] Furthermore, the linkage mechanism includes a slide groove provided at the top of one of the shielding strips along the width direction, and a lever provided at the bottom of the other shielding strip, and the lever is slidably connected in the slide groove.

[0008] Furthermore, guide grooves are provided on both side walls in the length direction of the observation window, both ends of the shielding strip are arranged in the guide grooves, the bottom wall of the guide groove is set as a stepped surface, and the step height of the stepped surface is equal to the height of the dynamic shielding strip.

[0009] Furthermore, the top wall of the guide groove is set as a wave surface, and the top surface of the movable shielding bar away from the fixed shielding bar is provided with a positioning protrusion engaged with the wave surface.

[0010] Furthermore, the lower support sheet is provided with two symmetrical L-shaped clips, the L-shaped clips are arranged along the length direction of the lower support sheet, and the tongue depressor is inserted into a clip groove formed by the two L-shaped clips.

[0011] Furthermore, positioning rods are provided on both sides of one end of the tongue depressor away from the observation window, and the distance between the two positioning rods is greater than the distance between the two L-shaped clips.

[0012] Furthermore, the upper support piece and the lower support piece are both U-shaped, the two inner side walls of the lower support piece are provided with at least two slide bars arranged along the height direction, and the two outer side walls of the upper support piece are provided with slide grooves engaged with the slide bars.

[0013] Furthermore, bolt seats are provided on the two inner side walls of the lower support plate, the adjusting screw is threadedly connected to the bolt seats, and one end thereof abuts against the bottom wall of the upper support plate.

[0014] Furthermore, one end of the upper support sheet is provided with a first lip edge folded toward the outside, and one end of the lower support sheet is provided with a second lip edge folded toward the outside.

[0015] Furthermore, the other end of the upper support piece is provided with a third lip edge folded toward the first lip edge, and the other end of the lower support piece is provided with a fourth lip edge folded toward the second lip edge.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] The oral bracket for auxiliary positioning of oral tumor radiotherapy of the present invention comprises an upper support plate and a lower support plate. The distance between the upper support plate and the lower support rod can be adjusted by rotating the adjusting screw, thereby changing the size of the support frame aperture, and thus can be suitable for the oral cavity sizes of different patients. An observation window and a shielding strip are arranged at the end of the tongue depressor inserted into the patient's oral cavity, and the observation window can be partially or completely covered by a linkage mechanism, which can not only play a role in suppressing the tongue, but also can adjust the width according to actual conditions, and will not block the sight of medical staff and will not affect radiotherapy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of an oral stent for auxiliary positioning of oral tumor radiotherapy according to the present invention.

[0019] Figure 2 yes Figure 1 AA section view.

[0020] Figure 3 is a top view of a tongue depressor.

[0021] Figure 4 yes Figure 3 Middle BB section view.

[0022] Among them: 1. Support frame; 11. Upper support plate; 111. Slide groove; 112. First lip; 113. Third lip; 12. Lower support plate; 121. L-shaped clip; 122. Slide strip; 123. Bolt seat; 124. Second lip; 125. Fourth lip; 13. Adjusting screw; 2. Tongue depressor; 21. Observation window; 211. Guide groove; 22. Blocking strip; 221. Fixed blocking strip; 222. Dynamic blocking strip; 223. Slide groove; 224. Lever; 225. Positioning protrusion; 23. Positioning rod; 3. Shaping rubber pad. DETAILED DESCRIPTION

[0023] Many specific details are described in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from the description, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] like Figure 1-4As shown, an oral bracket for auxiliary positioning of oral tumor radiotherapy includes a cylindrical bracket 1 and a long tongue depressor 2, and the tongue depressor 2 is inserted into the bracket 1. The bracket 1 includes an upper support plate 11 and a lower support plate 12 that are slidably connected in the height direction, and an adjusting screw 13 for adjusting the height of the bracket 1 is provided between the upper support plate 11 and the lower support plate 12. By rotating the adjusting screw 13, the upper support plate 11 can be raised or lowered relative to the lower support plate 12, thereby adjusting the height of the oral bracket. An observation window 21 is provided at one end of the tongue depressor 2 placed in the patient's mouth, and a plurality of shielding strips 22 are provided in the observation window 21. The shielding strips 22 include a fixed shielding strip 221 fixedly connected to the side wall of the observation window 21, and a plurality of movable shielding strips 222 slidably connected to the observation window 21. A linkage mechanism is provided between two adjacent shielding strips 22, and the linkage mechanism drives the shielding strip 22 to partially or completely cover the observation window 21.

[0025] Specifically, the linkage mechanism includes a slide groove 223 provided at the top of one shielding bar 22 along the width direction, and a lever 224 provided at the bottom of another shielding bar 22, and the lever 224 is slidably connected in the slide groove 223. In this way, when the movable shielding bar 222 is slid in a direction away from the fixed shielding bar 221, the lever 224 will drive the adjacent movable shielding bar 222 to slide after reaching the end of the slide groove 223, so that each movable shielding bar 222 can be gradually opened to completely cover the observation window 21; conversely, when sliding in a direction close to the fixed shielding bar 221, the observation window 21 can be slowly opened until all the movable shielding bars 222 are completely folded on the fixed shielding bar 221. Through the above operation, the size of the observation window 21 can be very conveniently adjusted to suit different patients.

[0026] Specifically, the two side walls of the observation window 21 in the length direction are provided with guide grooves 211, and the two ends of the shielding strip 22 are provided in the guide grooves 211. Furthermore, the bottom wall of the guide groove 211 is provided as a stepped surface, and the step height of the stepped surface is equal to the height of the dynamic shielding strip 222, and the step width is equal to the width of the dynamic shielding strip 222. The stepped surface can play a limiting role after the dynamic shielding strip 222 slides into place, and can keep the dynamic shielding strip 222 horizontal at the same time.

[0027] Specifically, the top wall of the guide groove 211 is set as a wave surface, and the top surface of the movable shielding bar 222 (that is, the one located at the top when all shielding bars are folded) away from the fixed shielding bar 221 is provided with a positioning protrusion 225 engaged with the wave surface. The positioning protrusion 225 can play a positioning role when the movable shielding bar 222 slides to a suitable position, ensuring that the size of the observation window 21 will not change arbitrarily.

[0028] Specifically, two symmetrical L-shaped clips 121 are provided on the lower support sheet 12 . The L-shaped clips 121 are arranged along the length direction of the lower support sheet 12 , and the tongue depressor 2 is inserted into the clip grooves formed by the two L-shaped clips 121 .

[0029] Specifically, positioning rods 23 are provided on both sides of one end of the tongue depressor 2 away from the observation window 21, and the distance between the two positioning rods 23 is greater than the distance between the two L-shaped clips 121. The positioning rods 23 play a limiting role to prevent the tongue depressor 2 from sliding into the deep of the patient's oral cavity.

[0030] Specifically, the upper support piece 11 and the lower support piece 12 are both U-shaped, and the two inner side walls of the lower support piece 12 are provided with at least two parallel sliding bars 122 arranged along the height direction, and two are preferably provided in this embodiment; the two outer side walls of the upper support piece 11 are provided with sliding grooves 111 embedded with the sliding bars 122.

[0031] Specifically, bolt seats 123 are provided on the two inner side walls of the lower support plate 12 and between the slide bars 122 . The adjusting screw 13 is threadedly connected to the bolt seats 123 , and one end of the adjusting screw 13 passes through the bolt seat 123 and abuts against the bottom wall of the upper support plate 11 .

[0032] Specifically, one end of the upper support sheet 11 placed in the patient's mouth is provided with a first lip 112 folded outward, and one end of the lower support sheet 12 placed in the mouth is provided with a second lip 124 folded outward. The arc transition between the first lip 112 and the second lip 124 can avoid scratching the patient's mouth, and can also play a limiting role to prevent the oral bracket from slipping out of the patient's mouth.

[0033] Specifically, the end of the upper support sheet 11 located outside the patient's mouth is provided with a third lip edge 113 folded toward the first lip edge 112, and the end of the lower support sheet 12 located outside the patient's mouth is provided with a fourth lip edge 125 folded toward the second lip edge 124. The third lip edge 113 and the fourth lip edge 125 are used to buckle the patient's lips to prevent the support frame from sliding toward the inside of the patient's mouth.

[0034] Specifically, the outer walls of the upper support plate 11 and the lower support plate 12 are provided with shaping rubber pads 3, which can shape the patient's upper teeth and lower teeth respectively, so as to better fix the support frame 1 in the patient's mouth and prevent the support frame 1 from moving forward and backward.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oral stent for auxiliary positioning of oral tumor radiotherapy, characterized in that: The cover is fixedly mounted on a support frame and has a plurality of movable cover bars connected thereto for movement with the support frame to move upwards and downwards to move the cover bar upwards. The top wall of the guide groove is set as a stepped surface, and the step height of the stepped surface is equal to the height of the dynamic shielding bar, the top wall of the guide groove is set as a wavy surface, and the top surface of the dynamic shielding bar away from the fixed shielding bar is provided with a positioning protrusion engaged with the wavy surface; the lower support plate is provided with two symmetrical L-shaped clips, and the L-shaped clips are arranged along the length direction of the lower support plate, and the tongue depressor is inserted into the clip groove formed by the two L-shaped clips, and the upper support plate and the lower support plate are both U-shaped, and the two inner side walls of the lower support plate are provided with at least two sliding strips arranged along the height direction, and the two outer side walls of the upper support plate are provided with sliding grooves engaged with the sliding strips, and the two inner side walls of the lower support plate are provided with bolt seats, the adjusting screw is threadedly connected to the bolt seat, and one end is against the bottom wall of the upper support plate; the outer walls of the upper support plate and the lower support plate are both provided with plastic rubber pads.

2. The oral stent for auxiliary positioning of oral tumor radiotherapy according to claim 1, characterized in that: Positioning rods are arranged on both sides of one end of the tongue depressor away from the observation window, and the distance between the two positioning rods is greater than the distance between the two L-shaped clips.

3. The oral stent for auxiliary positioning of oral tumor radiotherapy according to claim 2, characterized in that: One end of the upper support sheet is provided with a first lip edge folded toward the outside, and one end of the lower support sheet is provided with a second lip edge folded toward the outside.

4. The oral stent for auxiliary positioning of oral tumor radiotherapy according to claim 3, characterized in that: The other end of the upper support piece is provided with a third lip edge folded toward the first lip edge, and the other end of the lower support piece is provided with a fourth lip edge folded toward the second lip edge.

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